Fixed new line in docblock

Fixes docblock generation for ```set```, ```get```, ```add``` and ```remove``` methods (change introduced in #1067 247803715bd7e5ded75e25dbbb4eb2c5b7fbd2f2):

Before:
```php
/**
 * Set myProp.

 *
 * @param integer $myProp
 *
 * @return MyEntity
 */
```

After:
```php
/**
 * Set myProp.
 *
 *
 * @param integer $myProp
 *
 * @return MyEntity
 */
```